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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2011 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: ConvertedProperty.html 689 2013-06-28 19:22:16Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.dellroad.stuff.vaadin7;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import com.vaadin.data.Property;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import com.vaadin.data.util.AbstractProperty;<a name="line.11"></a>
<span class="sourceLineNo">012</span>import com.vaadin.data.util.converter.Converter;<a name="line.12"></a>
<span class="sourceLineNo">013</span><a name="line.13"></a>
<span class="sourceLineNo">014</span>import java.util.Locale;<a name="line.14"></a>
<span class="sourceLineNo">015</span><a name="line.15"></a>
<span class="sourceLineNo">016</span>/**<a name="line.16"></a>
<span class="sourceLineNo">017</span> * Applies a {@link Converter} to a {@link Property} of one type (the "model" type) to produce a<a name="line.17"></a>
<span class="sourceLineNo">018</span> * {@link Property} of another type (the "presentation" type).<a name="line.18"></a>
<span class="sourceLineNo">019</span> *<a name="line.19"></a>
<span class="sourceLineNo">020</span> * @param &lt;P&gt; the "presentation" type of this {@link Property}<a name="line.20"></a>
<span class="sourceLineNo">021</span> * @param &lt;M&gt; the "model" type of the nested {@link Property}<a name="line.21"></a>
<span class="sourceLineNo">022</span> */<a name="line.22"></a>
<span class="sourceLineNo">023</span>@SuppressWarnings("serial")<a name="line.23"></a>
<span class="sourceLineNo">024</span>public class ConvertedProperty&lt;P, M&gt; extends AbstractProperty&lt;P&gt; {<a name="line.24"></a>
<span class="sourceLineNo">025</span><a name="line.25"></a>
<span class="sourceLineNo">026</span>    private final Property&lt;M&gt; property;<a name="line.26"></a>
<span class="sourceLineNo">027</span>    private final Converter&lt;P, M&gt; converter;<a name="line.27"></a>
<span class="sourceLineNo">028</span>    private final Locale locale;<a name="line.28"></a>
<span class="sourceLineNo">029</span><a name="line.29"></a>
<span class="sourceLineNo">030</span>    private ValueChangeListener valueChangeListener;<a name="line.30"></a>
<span class="sourceLineNo">031</span>    private ReadOnlyStatusChangeListener readOnlyStatusChangeListener;<a name="line.31"></a>
<span class="sourceLineNo">032</span><a name="line.32"></a>
<span class="sourceLineNo">033</span>    /**<a name="line.33"></a>
<span class="sourceLineNo">034</span>     * Primary constructor.<a name="line.34"></a>
<span class="sourceLineNo">035</span>     *<a name="line.35"></a>
<span class="sourceLineNo">036</span>     * @param property underlying property<a name="line.36"></a>
<span class="sourceLineNo">037</span>     * @param converter converts this property's values from/to the underlying property's values<a name="line.37"></a>
<span class="sourceLineNo">038</span>     * @param locale the {@link Locale} to provide to {@code converter}, or null for none<a name="line.38"></a>
<span class="sourceLineNo">039</span>     * @throws IllegalArgumentException if {@code type}, {@code property}, or {@code converter} is null<a name="line.39"></a>
<span class="sourceLineNo">040</span>     */<a name="line.40"></a>
<span class="sourceLineNo">041</span>    public ConvertedProperty(Property&lt;M&gt; property, Converter&lt;P, M&gt; converter, Locale locale) {<a name="line.41"></a>
<span class="sourceLineNo">042</span>        if (property == null)<a name="line.42"></a>
<span class="sourceLineNo">043</span>            throw new IllegalArgumentException("null property");<a name="line.43"></a>
<span class="sourceLineNo">044</span>        if (converter == null)<a name="line.44"></a>
<span class="sourceLineNo">045</span>            throw new IllegalArgumentException("null converter");<a name="line.45"></a>
<span class="sourceLineNo">046</span>        this.property = property;<a name="line.46"></a>
<span class="sourceLineNo">047</span>        this.converter = converter;<a name="line.47"></a>
<span class="sourceLineNo">048</span>        this.locale = locale;<a name="line.48"></a>
<span class="sourceLineNo">049</span>    }<a name="line.49"></a>
<span class="sourceLineNo">050</span><a name="line.50"></a>
<span class="sourceLineNo">051</span>    /**<a name="line.51"></a>
<span class="sourceLineNo">052</span>     * Convenience constructor for when no {@link Locale} is required.<a name="line.52"></a>
<span class="sourceLineNo">053</span>     *<a name="line.53"></a>
<span class="sourceLineNo">054</span>     * &lt;p&gt;<a name="line.54"></a>
<span class="sourceLineNo">055</span>     * Equivalent to:<a name="line.55"></a>
<span class="sourceLineNo">056</span>     *  &lt;blockquote&gt;&lt;code&gt;<a name="line.56"></a>
<span class="sourceLineNo">057</span>     *  ConvertedProperty(property, converter, null)<a name="line.57"></a>
<span class="sourceLineNo">058</span>     *  &lt;/code&gt;&lt;/blockquote&gt;<a name="line.58"></a>
<span class="sourceLineNo">059</span>     */<a name="line.59"></a>
<span class="sourceLineNo">060</span>    public ConvertedProperty(Property&lt;M&gt; property, Converter&lt;P, M&gt; converter) {<a name="line.60"></a>
<span class="sourceLineNo">061</span>        this(property, converter, null);<a name="line.61"></a>
<span class="sourceLineNo">062</span>    }<a name="line.62"></a>
<span class="sourceLineNo">063</span><a name="line.63"></a>
<span class="sourceLineNo">064</span>    @Override<a name="line.64"></a>
<span class="sourceLineNo">065</span>    public Class&lt;? extends P&gt; getType() {<a name="line.65"></a>
<span class="sourceLineNo">066</span>        return this.converter.getPresentationType();<a name="line.66"></a>
<span class="sourceLineNo">067</span>    }<a name="line.67"></a>
<span class="sourceLineNo">068</span><a name="line.68"></a>
<span class="sourceLineNo">069</span>    @Override<a name="line.69"></a>
<span class="sourceLineNo">070</span>    public P getValue() {<a name="line.70"></a>
<span class="sourceLineNo">071</span>        return this.converter.convertToPresentation(this.property.getValue(), this.getType(), this.locale);<a name="line.71"></a>
<span class="sourceLineNo">072</span>    }<a name="line.72"></a>
<span class="sourceLineNo">073</span><a name="line.73"></a>
<span class="sourceLineNo">074</span>    @Override<a name="line.74"></a>
<span class="sourceLineNo">075</span>    public void setValue(P value) {<a name="line.75"></a>
<span class="sourceLineNo">076</span>        this.property.setValue(this.converter.convertToModel(value, this.converter.getModelType(), this.locale));<a name="line.76"></a>
<span class="sourceLineNo">077</span>    }<a name="line.77"></a>
<span class="sourceLineNo">078</span><a name="line.78"></a>
<span class="sourceLineNo">079</span>    @Override<a name="line.79"></a>
<span class="sourceLineNo">080</span>    public boolean isReadOnly() {<a name="line.80"></a>
<span class="sourceLineNo">081</span>        return this.property.isReadOnly();<a name="line.81"></a>
<span class="sourceLineNo">082</span>    }<a name="line.82"></a>
<span class="sourceLineNo">083</span><a name="line.83"></a>
<span class="sourceLineNo">084</span>    @Override<a name="line.84"></a>
<span class="sourceLineNo">085</span>    public void setReadOnly(boolean readOnly) {<a name="line.85"></a>
<span class="sourceLineNo">086</span>        this.property.setReadOnly(readOnly);<a name="line.86"></a>
<span class="sourceLineNo">087</span>    }<a name="line.87"></a>
<span class="sourceLineNo">088</span><a name="line.88"></a>
<span class="sourceLineNo">089</span>    @Override<a name="line.89"></a>
<span class="sourceLineNo">090</span>    public void addReadOnlyStatusChangeListener(Property.ReadOnlyStatusChangeListener listener) {<a name="line.90"></a>
<span class="sourceLineNo">091</span>        if (this.readOnlyStatusChangeListener == null &amp;&amp; this.property instanceof Property.ReadOnlyStatusChangeNotifier) {<a name="line.91"></a>
<span class="sourceLineNo">092</span>            this.readOnlyStatusChangeListener = new ReadOnlyStatusChangeListener();<a name="line.92"></a>
<span class="sourceLineNo">093</span>            ((Property.ReadOnlyStatusChangeNotifier)this.property).addReadOnlyStatusChangeListener(<a name="line.93"></a>
<span class="sourceLineNo">094</span>              this.readOnlyStatusChangeListener);<a name="line.94"></a>
<span class="sourceLineNo">095</span>        }<a name="line.95"></a>
<span class="sourceLineNo">096</span>        super.addReadOnlyStatusChangeListener(listener);<a name="line.96"></a>
<span class="sourceLineNo">097</span>    }<a name="line.97"></a>
<span class="sourceLineNo">098</span><a name="line.98"></a>
<span class="sourceLineNo">099</span>    @Override<a name="line.99"></a>
<span class="sourceLineNo">100</span>    public void addValueChangeListener(Property.ValueChangeListener listener) {<a name="line.100"></a>
<span class="sourceLineNo">101</span>        if (this.valueChangeListener == null &amp;&amp; this.property instanceof Property.ValueChangeNotifier) {<a name="line.101"></a>
<span class="sourceLineNo">102</span>            this.valueChangeListener = new ValueChangeListener();<a name="line.102"></a>
<span class="sourceLineNo">103</span>            ((Property.ValueChangeNotifier)this.property).addValueChangeListener(this.valueChangeListener);<a name="line.103"></a>
<span class="sourceLineNo">104</span>        }<a name="line.104"></a>
<span class="sourceLineNo">105</span>        super.addValueChangeListener(listener);<a name="line.105"></a>
<span class="sourceLineNo">106</span>    }<a name="line.106"></a>
<span class="sourceLineNo">107</span><a name="line.107"></a>
<span class="sourceLineNo">108</span>// Property.ValueChangeListener relay<a name="line.108"></a>
<span class="sourceLineNo">109</span><a name="line.109"></a>
<span class="sourceLineNo">110</span>    @SuppressWarnings("serial")<a name="line.110"></a>
<span class="sourceLineNo">111</span>    private class ValueChangeListener implements Property.ValueChangeListener {<a name="line.111"></a>
<span class="sourceLineNo">112</span>        @Override<a name="line.112"></a>
<span class="sourceLineNo">113</span>        public void valueChange(Property.ValueChangeEvent event) {<a name="line.113"></a>
<span class="sourceLineNo">114</span>            ConvertedProperty.this.fireValueChange();<a name="line.114"></a>
<span class="sourceLineNo">115</span>        }<a name="line.115"></a>
<span class="sourceLineNo">116</span>    }<a name="line.116"></a>
<span class="sourceLineNo">117</span><a name="line.117"></a>
<span class="sourceLineNo">118</span>// Property.ReadOnlyStatusChangeListener relay<a name="line.118"></a>
<span class="sourceLineNo">119</span><a name="line.119"></a>
<span class="sourceLineNo">120</span>    @SuppressWarnings("serial")<a name="line.120"></a>
<span class="sourceLineNo">121</span>    private class ReadOnlyStatusChangeListener implements Property.ReadOnlyStatusChangeListener {<a name="line.121"></a>
<span class="sourceLineNo">122</span>        @Override<a name="line.122"></a>
<span class="sourceLineNo">123</span>        public void readOnlyStatusChange(Property.ReadOnlyStatusChangeEvent event) {<a name="line.123"></a>
<span class="sourceLineNo">124</span>            ConvertedProperty.this.fireReadOnlyStatusChange();<a name="line.124"></a>
<span class="sourceLineNo">125</span>        }<a name="line.125"></a>
<span class="sourceLineNo">126</span>    }<a name="line.126"></a>
<span class="sourceLineNo">127</span>}<a name="line.127"></a>
<span class="sourceLineNo">128</span><a name="line.128"></a>




























































</pre>
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